diff --git a/opt/system-image b/opt/system-image
index ae94c03..99d21c6 100644
--- a/opt/system-image
+++ b/opt/system-image
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# used to work around cases where stdin is unavailable or not a terminal
+# work around situations where stdin is unavailable or not a terminal
 if bash -c ': > /dev/tty' > /dev/null 2>&1; then
   TTY_OR_CONSOLE="/dev/tty"
 else
@@ -22,10 +22,12 @@ function yesno {
     read -p "[y/n] " -n1 DISCARD_ME < $TTY_OR_CONSOLE > $TTY_OR_CONSOLE
     case "$DISCARD_ME" in
       y)
+        # add a line break
         echo_tty
         return 0
         ;;
       n)
+        # add a line break
         echo_tty
         return 1
         ;;
@@ -44,7 +46,10 @@ if [ "$1" = "--yes" ]; then
 else
   DONT_ASK="false"
 
+  #TODO: use a bright color for ==== and the question
+  echo_tty "=========================="
   echo_tty "Create a new system image?"
+  echo_tty "=========================="
   echo_tty
   echo_tty "This will replace the existing system image with a snapshot of the currently"
   echo_tty "running system. Choosing no here will discard any newly installed programs,"
@@ -57,8 +62,6 @@ else
   echo_tty
 fi
 
-#TODO: colors (bright white / light gray for readability)
-
 if $DONT_ASK || yesno; then
   echo_tty -n "Generating exclusion list... "
   # cutting off the leading slash allows us to just ignore empty lines below
@@ -68,6 +71,7 @@ if $DONT_ASK || yesno; then
 
   for I in ${!MOUNT_LIST[@]}; do
     if [ ! -z "${MOUNT_LIST[$I]}" ]; then
+      # check if a parent of ${MOUNT_LIST[$I]} is already in $EXCLUDE_LIST
       FOUND=0
       for J in ${!EXCLUDE_LIST[@]}; do
         if grep "${EXCLUDE_LIST[$J]}" > /dev/null <<< "${MOUNT_LIST[$I]}"; then